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F. 0. JAQUES, In.

GAGE. APPLICATION FILED JAN. 22. 1919.

1 ,308,493. Patented July 1, 1919.

INVENTUE ATTUENEY:

Tm: eOLUMnIA PLANOGRAPII c0., WASHINGTON, n. C,

UNITED STATESPATENT orrion.

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Specification of Letters Patent. Patented J 1y 1 Application filed.January 22, 1919. Serial No. 272,568.

To all whom it may concern:

Be it known that I, FERNANDO OSCAR JAQUES, Jr., a citizen of the UnitedStates, residing at Providence, in the county of Providence and State ofRhode Island, have invented a new and useful Improvement in Gages, ofwhich the following is a specification.

Internal gages as heretofore constructed in one piece will in time wear.When Worn so as to destroy their accuracy, they are thrown away. Thismeans an appreciable loss, as these gages are expensive and cannot againbe made accurate. 1

My invention has reference to internal gages used for gaging theinterior of cylinders, bores, etc., and more particularly to animprovement on my internal gage shown in my United States patentappllcation filed Sept. 9, 1918, Serial No. 253,228. Allowed December21, 1918.

The object of my invention is to improve the construction of such aninternal gage whereby, the means of adjusting the balls for wear isimproved and simplified and a more rigid and accurate gage produced.

My invention consists in the peculiar and novel construction of aninternal gage, said gage having details of construction, as will be morefully set forth hereinafter and claimed. 1

Figure 1 is a side view of my improved internal gage.

Fig. 2 is an end view of the gage, and

Fig. 3 is a longitudinal sectional View through the gage.

In the drawings 4 indicates a solid round oblong handle, 5, 5 hardenedsteel balls and 6, 6, internally screw-threaded ball retaining lockingcaps. The handle 41 has at one end the, external screw-threads 7 and ade pression 8 for a ball 5 and at the other end an internalscrew-threaded bore 9. An ad justing member 10 has correspondingexternal screw -threads 7 a depression 8 and an externallyscrew-threaded stem 11 which screws into the bore 9 and is, afteradjusting for accuracy, rigidly and positively secured in the adjustedposition, by a pin 12 through the handle 4 and stem 11. Each of the ballretaining locking caps 6, 6 has an open ball retaining end 13 throughwhich a ball 5 protrudes a predetermined distance, the internalscrew-threads 14 in screwthreaded engagement with the screw-threads 7"and is knurled on its outer surface for convenience in turning thelocklng cap to lockthe ball in the adjusted position.

The adjusting for accuracy is done by adjusting the adjusting member 10on the handle 4 in assembling the parts and after assembling andadjusting for accuracy, the adjusting member 10 is fixed to the handle4: by the pin 12. When in use a ball wears so as to destroy itsaccuracy, the locking ca) 6 1s loosened, the ball slightly turned an thecap tightened, thereby locking the ball in the adjusted position. Thegage now has again its original accuracy of a fraction of a thousandthpart of an inch and this may be repeated an innumerable number of times.

.Having thus described my invention I claim as new i 1. A gage having asolid oblong handle, and provided with a depression at each end, a ballon each end of the handle and seated in said depression, a locking capon each end of the handle, each locking cap having an opening throughwhich a ball protrudes, said locking caps being in screw-threadedengagement with the handle of the gage.

2. A gage having a solid oblong handle with an externally screw threadedend, and provided with a depression at the end, a ball on the end andseated in said depression, a

the ball protrudes, said locking cap being in screw-threaded engagementwith the adjusting member and means for locking the adjusting member,after adjustment, in the adjusted position.

3. An internal gage having a solid oblong handle 4:,and provided with adepression 8 at the end and eXternal screw-threads 7 at one end, ahardened steel ball 5 seated in said depression 8, said handle having atits opposite end an internally screw-threaded bore 9, a ball retaininglocking cap 6 in screw-thread i engagement with the screw threads 7 andhaving an open ball retaining end 13 through Which a ball 5 protrudes,an adjusting member 10 having external screwthreads 7 and an externallyscrew-threaded 813611111 which screws into the bore 9, and

has an initial adjustment in said bore and,

10 after adjustment, is rigidly securedby a pin FERNANDO OSCAR JAQUES,JR.

copies of this Patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

" Washington, D. G.

